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11.发明申请Method of estimating fading coefficients of channels and of receiving symbols and related single or multi-antenna receiver and transmitter 有权估计信道衰落系数和接收符号以及相关的单天线或多天线接收机和发射机的方法公开(公告)号：US20060120486A1
公开(公告)日：2006-06-08
申请号：US11287112
申请日：2005-11-23
CPC分类号： H04L25/0224 , H04L25/061 , H04L27/32 , H04L27/3818
摘要： The method is for estimating the fading coefficients of a plurality of transmission channels on which signals to be sent, generated as a function of a sequence of symbols, are transmitted according to a particular modulation, e.g. AM-PSK modulation. The fading coefficients are estimated by using estimations of the transmitted symbols obtained in advance, thus obtaining DC components of the received signal by coherent demodulation locked to the phases of the transmitted AM-PSK signals, and processing these DC components. The method may not require the choice of a stochastic distribution model of the channel fading, thus it remains efficient even when the channel characteristics vary significantly. Moreover, the method works correctly even if the received stream is disturbed by inter-symbolic interference (ISI) and/or by multi-path fading.
摘要翻译： 该方法是用于估计多个传输信道的衰落系数，其上根据特定调制发送作为符号序列生成的要发送的信号，例如， AM-PSK调制。 通过使用预先获得的发送符号的估计来估计衰落系数，从而通过锁定到发送的AM-PSK信号的相位的相干解调获得接收信号的DC分量，并处理这些DC分量。 该方法可能不需要选择信道衰落的随机分布模型，因此即使当信道特性显着变化时，仍然保持有效。 此外，即使接收的流被符号间干扰（ISI）和/或多路径衰落干扰，该方法也能正常工作。
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12.发明申请Method and system for coding/decoding signals and computer program product therefor 失效用于编码/解码信号的方法和系统及其计算机程序产品公开(公告)号：US20050078770A1
公开(公告)日：2005-04-14
申请号：US10930715
申请日：2004-08-30
申请人： Giuseppe Visalli , Francesco Pappalardo , Giuseppe Avellone , Francesco Rimi , Agostino Galluzzo
发明人： Giuseppe Visalli , Francesco Pappalardo , Giuseppe Avellone , Francesco Rimi , Agostino Galluzzo
CPC分类号： H04L1/0059 , H03M13/256 , H04L1/0054 , H04L1/0068 , H04L25/067 , H04L27/2272 , H04L2027/0055 , H04L2027/0067
摘要： A method for decoding signals with encoded symbols over a symbol interval that modulate a carrier. The method includes phase locking the signal to be decoded to obtain a phase-locked signal. The value assumed by the phase-locked signal on at least one subinterval in each symbol interval is detected. The method continues with attributing to the decoded symbol corresponding to each symbol interval a value that is a function of the value detected the subinterval. The subinterval in question can be a single subinterval located at the end of the symbol interval. Alternatively, the value assumed by the phase-locked signal on a plurality of subintervals in each symbol interval is detected, and a respective majority value of said phase-locked signal within said plurality of subintervals is identified. A value determined on the basis of the majority value is attributed to the decoded symbol corresponding to each symbol interval.
摘要翻译： 一种用于在调制载体的符号间隔上对具有编码符号的信号进行解码的方法。 该方法包括对要解码的信号进行锁相以获得锁相信号。 检测每个符号间隔中的至少一个子间隔上的锁相信号所假设的值。 该方法继续归因于对应于每个符号间隔的解码符号，该值是检测到子间隔的值的函数。 所涉及的子间隔可以是位于符号间隔结束处的单个子间隔。 或者，检测每个符号间隔中的多个子间隔上的锁相信号所假设的值，并且识别所述多个子区间内的所述锁相信号的相应多数值。 基于多数值确定的值归因于对应于每个符号间隔的解码符号。
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公开(公告)号：US08582702B2
公开(公告)日：2013-11-12
申请号：US12825278
申请日：2010-06-28
CPC分类号： H04B1/0007 , H04B1/1027
摘要： An electronic device includes an analog-to-digital converter adapted to receive a radio-frequency signal and adapted to provide therefrom a digital signal, wherein the radio-frequency signal may include an interference signal. The electronic device has a controller adapted to perform a digital measure on the digital signal and adapted to generate therefrom a selection signal having a first value indicating a non-interference condition in the radio-frequency signal and having a second value indicating an interference-condition in the radio-frequency signal. A selector is adapted to transmit the digital signal in case the selection signal has the first value and to transmit a signal replacing the digital signal in case the selection signal has the second value.
摘要翻译： 电子设备包括适于接收射频信号并适于从其提供数字信号的模拟 - 数字转换器，其中所述射频信号可以包括干扰信号。 电子设备具有控制器，适于对数字信号执行数字测量，并且适于从其产生具有指示射频信号中的非干扰状态的第一值的选择信号，并具有指示干扰条件的第二值 在射频信号中。 选择器适于在选择信号具有第一值的情况下发送数字信号，并且在选择信号具有第二值的情况下发送替换数字信号的信号。
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公开(公告)号：US20100329321A1
公开(公告)日：2010-12-30
申请号：US12825278
申请日：2010-06-28
IPC分类号： H04B17/00
CPC分类号： H04B1/0007 , H04B1/1027
摘要： An electronic device includes an analog-to-digital converter adapted to receive a radio-frequency signal and adapted to provide therefrom a digital signal, wherein the radio-frequency signal may include an interference signal. The electronic device has a controller adapted to perform a digital measure on the digital signal and adapted to generate therefrom a selection signal having a first value indicating a non-interference condition in the radio-frequency signal and having a second value indicating an interference-condition in the radio-frequency signal. A selector is adapted to transmit the digital signal in case the selection signal has the first value and to transmit a signal replacing the digital signal in case the selection signal has the second value.
摘要翻译： 电子设备包括适于接收射频信号并适于从其提供数字信号的模拟 - 数字转换器，其中所述射频信号可以包括干扰信号。 电子设备具有控制器，适于对数字信号执行数字测量，并且适于从其产生具有指示射频信号中的非干扰状态的第一值的选择信号，并具有指示干扰条件的第二值 在射频信号中。 选择器适于在选择信号具有第一值的情况下发送数字信号，并且在选择信号具有第二值的情况下发送替换数字信号的信号。
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15.发明授权Process for generating codes for CDMA communications, system and computer program product therefor 有权用于生成CDMA通信代码的过程，系统和计算机程序产品公开(公告)号：US07436963B2
公开(公告)日：2008-10-14
申请号：US10383872
申请日：2003-03-07
IPC分类号： H04B7/216
CPC分类号： H04J13/105 , H04J13/0025
摘要： To generate the main scrambling code of order N and the secondary scrambling code of order K within the set identified by the primary scrambling code of order N, a first m-sequence and a second m-sequence are generated using Fibonacci linear feedback shift registers. The first m-sequence and the second m-sequence are modulo-2 added to form the I branch of the primary scrambling code. A first T-bit masking word and a second T-bit masking word of rank 0 are generated that correspond to the polynomial time shifts, and the intermediate taps of the X and y registers respectively chosen by the masking words are modulo-2 added so as to generate a third sequence and a fourth sequence, which are modulo-2 added together to form the Q branch of the primary scrambling code. Starting from the least significant Kmax bits of the register X, of the K-th intermediate tap corresponding to the secondary scrambling code of order K within the set identified by the primary scrambling code of order N, a fifth sequence is generated, which, modulo-2 added to the second sequence, forms the I branch of the secondary scrambling code. By modulo-2 summing the intermediate taps of the register X masked by the first masking word of rank N, a sixth sequence is generated, which, modulo-2 added to the fourth sequence, forms the Q branch of the secondary scrambling code.
摘要翻译： 为了产生N阶的主扰码和由次序N的主扰码识别的集合内的次序K的次扰码，使用斐波纳契线性反馈移位寄存器生成第一m序列和第二m序列。 第一个m序列和第二个m序列被模2加上以形成主扰码的I分支。 产生对应于多项式时移的第一T位屏蔽字和秩0的第二T位屏蔽字，并且分别由掩蔽字选择的X和Y寄存器的中间抽头被模2相加 以产生模2加在一起以形成主扰码的Q分支的第三序列和第四序列。 从与由次序N的主扰码识别的集合内的次序K的次扰码相对应的第K个中间抽头的寄存器X的最低有效Kmax位开始，产生第五个序列，模数 -2加到第二个序列，形成二次扰码的I分支。 通过对由N级的第一掩蔽字掩蔽的寄存器X的中间抽头进行模2求和，生成第六序列，其中第二序列被加到第四序列上的模2形成二次扰码的Q分支。
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16.发明授权公开(公告)号：US07292664B2
公开(公告)日：2007-11-06
申请号：US10684217
申请日：2003-10-10
IPC分类号： H04L7/00
CPC分类号： H04B1/70735 , H04B1/708 , H04B1/7083 , H04B2201/70702 , H04B2201/70707
摘要： To obtain frame synchronization and identify the cell codegroup in a cellular communication system (such as a system based upon the standard 3GPP FDD), there are available the synchronization codes organized in chips or letters transmitted at the beginning of respective slots. Slot synchronization is obtained previously in a first step of the operation of cell search. During a second step, there are acquired, by means of correlation or fast Hadamard transform, the energy values corresponding to the respective individual letters with reference to the possible starting positions of the corresponding frame within the respective slot. Operating in a serial way at the end of acquisition of the aforesaid energy values of the individual letters, or else operating in parallel, the energies of the corresponding words are determined. Of these energies only the maximum word-energy value and the information for the corresponding starting position are stored in a memory structure. Said maximum value and said starting position identify, respectively, the cell codes and the frame synchronization sought. One application is in mobile communication systems based upon standards such as UMTS, CDMA2000, IS95, or WBCDMA.
摘要翻译： 为了获得帧同步并在蜂窝通信系统（例如基于标准3GPP FDD的系统）中识别小区代码组，可以使用以相应时隙开头发送的芯片或字母组织的同步码。 在小区搜索的操作的第一步骤中先前获得了时隙同步。 在第二步骤中，通过相关或快速Hadamard变换，参照各个时隙内对应的帧的可能的起始位置获取与各个字母对应的能量值。 在单个字母的上述能量值的获取结束时以串行方式操作，或者并行操作，确定相应词语的能量。 在这些能量中，只有最大字能量值和对应起始位置的信息被存储在存储器结构中。 所述最大值和所述起始位置分别识别所述小区代码和所述帧同步。 一种应用是基于UMTS，CDMA2000，IS95或WBCDMA等标准的移动通信系统。
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17.发明授权Method and device for synchronization and identification of the codegroup in cellular communication systems and computer program product therefor 有权用于蜂窝通信系统中的代码组的同步和识别的方法和设备及其计算机程序产品公开(公告)号：US07123929B2
公开(公告)日：2006-10-17
申请号：US10717433
申请日：2003-11-18
申请人： Giuseppe Avellone , Francesco Rimi , Francesco Pappalardo , Agostino Galluzzo , Giuseppe Visalli
发明人： Giuseppe Avellone , Francesco Rimi , Francesco Pappalardo , Agostino Galluzzo , Giuseppe Visalli
CPC分类号： H04B1/70735 , H04B1/7083
摘要： Once slot synchronization has been obtained in a first step, during a second step there is acquired, by means of correlation of the received signal (r) with the synchronization codes, the information corresponding to the codegroup and to the fine slot synchronization. The synchronization codes are split into codesets. In a first step, a synchronization code identifying a corresponding codeset (CS) is identified by means of correlation and search for the maximum value of correlation energy. In a second step, the received signal (r) is correlated with the remaining codes belonging to the codeset identified. The information thus obtained, which corresponds to all the synchronization codes comprised in the codeset identified, is used for obtaining frame synchronization and codegroup identification. Preferential application is in mobile communication systems based upon standards, such as UMTS, CDMA2000, IS95 or WBCDMA.
摘要翻译： 一旦在第一步骤中获得了时隙同步，则在第二步骤期间，通过接收到的信号（r）与同步码的相关性，获得与代码组相对应的信息和精细时隙同步。 同步代码被分为代码集。 在第一步骤中，通过相关性和相关能量的最大值搜索识别相应代码集（CS）的同步码。 在第二步骤中，所接收的信号（r）与所识别的代码集的剩余码相关。 由此获得的与所识别的代码集中包含的所有同步码对应的信息用于获得帧同步和码组识别。 优先应用在基于UMTS，CDMA2000，IS95或WBCDMA等标准的移动通信系统中。
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18.发明申请Method for transmitting signals using antenna diversity, for instance in mobile communication systems, transmitter, receiver and computer program product therefor 有权使用天线分集发送信号的方法，例如在移动通信系统，发射机，接收机和计算机程序产品中公开(公告)号：US20050271121A1
公开(公告)日：2005-12-08
申请号：US10910955
申请日：2004-08-03
CPC分类号： H04L1/0071 , H04L1/0618
摘要： Encoded digital symbols are transmitted via a first pair of antennas and at least one second pair of antennas. The sets of symbols used for the transmission via the second pair of antennas are re-ordered temporally into subsets of symbols with respect to the symbols used for the first pair of antennas. For the first pair of antennas, there is used a signal subjected to encoding with a code-division-multiple-access code and subjected to spreading with a spreading code, and, likewise, for the second pair or pairs of antennas there are used signals subjected to encoding with respective code-division-multiple-access code and subjected to spreading with a respective spreading code. At least one between the respective code-division-multiple-access code and the respective spreading code used for the transmission via the second pair of antennas is different from the code-division-multiple-access code and from the spreading code used for the transmission via the first pair of antennas. The solution can be extended to the use of a plurality of second pairs of antennas in transmission and/or to the use of a plurality of antennas in reception.
摘要翻译： 编码的数字符号经由第一对天线和至少一个第二对天线发送。 用于经由第二对天线的传输的符号组被相对于用于第一对天线的符号在时间上重新排序成符号子集。 对于第一对天线，使用经码分多址的编码的信号，并用扩展码进行扩频，同样地，对于第二对或天线对，使用信号 对各个码分多址码进行编码，并用相应的扩展码进行扩频。 各代码分多址和用于通过第二对天线传输的各扩频码中的至少一个不同于码分多址码和用于传输的扩展码 通过第一对天线。 解决方案可以扩展到在传输中使用多个第二对天线和/或在接收中使用多个天线。
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19.发明申请Process and device for the cell search procedure in cellular communication systems, computer program product therefor 有权用于蜂窝通信系统中的小区搜索过程的过程和设备，其计算机程序产品公开(公告)号：US20050002376A1
公开(公告)日：2005-01-06
申请号：US10841414
申请日：2004-05-07
CPC分类号： H04B1/70735 , H04B1/7083 , H04B2201/70702 , H04B2201/70707
摘要： To execute the cell-search procedure in a cellular communication system (such as a system based upon the 3GPP TDD standard), there are available identification codes for the second step (slot synchronization) and for the third step (identification of the scrambling codes). The identification codes are identified by a process of correlation with the received signal and are used for obtaining from a correspondence table the parameters for the execution of the second step (CD) or of the third step (SCR). The correspondence table is stored in a reduced form by the identification, according to rules of symmetry and redundancy, of subtables designed to generate the entire table by appropriate combination operations. The search procedure in the correspondence table thus reduced is conveniently modified by the introduction of the combination operations. A preferential application is in mobile communication systems based upon standards such as UMTS, CDMA2000, IS95 or WBCDMA.
摘要翻译： 为了在蜂窝通信系统（例如基于3GPP TDD标准的系统）中执行小区搜索过程，存在用于第二步骤（时隙同步）和第三步骤（识别扰码）的可用识别码， 。 通过与接收信号相关的处理来识别识别码，并且用于从对应表获得执行第二步骤（CD）或第三步骤（SCR）的参数。 根据对称规则和冗余度，通过适当组合操作生成整个表格的子表的标识，缩小形式存储对应表。 通过引入组合操作可以方便地修改由此减少的对应表中的搜索过程。 基于诸如UMTS，CDMA2000，IS95或WBCDMA的标准的移动通信系统中的优先应用。
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20.发明授权Method of estimating fading coefficients of channels and of receiving symbols and relative single or multi-antenna receiver and transmitter 有权估计信道衰落系数和接收符号以及相对单天线或多天线接收机和发射机的方法公开(公告)号：US07929643B2
公开(公告)日：2011-04-19
申请号：US12622054
申请日：2009-11-19
IPC分类号： H04L27/00
CPC分类号： H04L25/0224 , H04L25/061 , H04L27/32 , H04L27/3818
摘要： The method is for estimating the fading coefficients of a plurality of transmission channels on which signals to be sent, generated as a function of a sequence of symbols, are transmitted according to a particular modulation, e.g. AM-PSK modulation. The fading coefficients are estimated by using estimations of the transmitted symbols obtained in advance, thus obtaining DC components of the received signal by coherent demodulation locked to the phases of the transmitted AM-PSK signals, and processing these DC components. The method may not require the choice of a stochastic distribution model of the channel fading, thus it remains efficient even when the channel characteristics vary significantly. Moreover, the method works correctly even if the received stream is disturbed by inter-symbolic interference (ISI) and/or by multi-path fading.
摘要翻译： 该方法是用于估计多个传输信道的衰落系数，其上根据特定调制发送作为符号序列生成的要发送的信号，例如， AM-PSK调制。 通过使用预先获得的发送符号的估计来估计衰落系数，从而通过锁定到发送的AM-PSK信号的相位的相干解调获得接收信号的DC分量，并处理这些DC分量。 该方法可能不需要选择信道衰落的随机分布模型，因此即使当信道特性显着变化时，仍然保持有效。 此外，即使接收的流被符号间干扰（ISI）和/或多路径衰落干扰，该方法也能正常工作。
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